CN115156074A - Printed circuit board ICT testing device and testing method thereof - Google Patents
Printed circuit board ICT testing device and testing method thereof Download PDFInfo
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- CN115156074A CN115156074A CN202210789122.8A CN202210789122A CN115156074A CN 115156074 A CN115156074 A CN 115156074A CN 202210789122 A CN202210789122 A CN 202210789122A CN 115156074 A CN115156074 A CN 115156074A
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- 230000007246 mechanism Effects 0.000 claims abstract description 260
- 238000001514 detection method Methods 0.000 claims abstract description 151
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C2301/00—Sorting according to destination
- B07C2301/0008—Electronic Devices, e.g. keyboard, displays
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Abstract
The invention discloses an ICT (information communication technology) testing device and a testing method thereof for a printed circuit board, wherein the testing device sequentially comprises a feeding mechanism, a liftable feeding conveying mechanism, a double-layer detection mechanism, a liftable blanking conveying mechanism, a blanking mechanism, a recovery box and a control system from the front end to the rear end; the feeding mechanism conveys the PCB to be detected to the liftable feeding conveying mechanism, the liftable feeding conveying mechanism alternately conveys the PCB to be detected to the lower layer detection mechanism and the upper layer detection mechanism of the double-layer detection mechanism for detection, the PCB qualified for detection is conveyed to the blanking mechanism through the liftable blanking conveying mechanism, and the liftable blanking conveying mechanism after the PCB unqualified for detection is rotated is conveyed to the recovery box. The printed circuit board ICT testing device and the testing method thereof can realize double-line automatic feeding, detection, blanking and material rejecting of the printed circuit board, greatly improve the detection efficiency and the material rejecting efficiency, have high automation degree, do not need manpower, and have high detection precision.
Description
Technical Field
The invention relates to the technical field of electronic detection, in particular to a printed circuit board ICT testing device and a testing method thereof.
Background
Printed circuit boards, also known as Printed circuit boards, often referred to by the acronym PCB (Printed circuit board), are supports for electronic components and are providers of circuit connections for electronic components. It is called a "printed" circuit board because it is made using electronic printing techniques.
The Printed Circuit Board Assembly, often abbreviated as PCBA (Printed Circuit Board Assembly), means that a PCB blank is mounted on a component by SMT (surface mount technology, also called surface mount technology) or by DIP (dual inline-pin package), and is a Printed Circuit Board on which all electronic components are mounted.
The ICT testing equipment, namely the automatic on-line tester, is the testing equipment produced by PCBA which is necessary for modern electronic enterprises, has wide ICT application range, high measurement accuracy and clear indication of detected problems. By using the ICT, the production efficiency can be greatly improved, and the production cost can be reduced.
Patent CN207851237U discloses a PCB semi-automatic detection device, which comprises an ICT test machine and a main conveyor belt, wherein a PCB to be detected is conveyed on the main conveyor belt; the ICT testing machine is erected above the inner side of the main conveying belt, and a code reader is arranged above the main conveying belt and used for reading codes of PCBs to be detected on the main conveying belt; the detection equipment further comprises an auxiliary conveying belt for shunting away PCB poor in detection, and the auxiliary conveying belt is arranged on one side, facing the output end of the main conveying belt, of the ICT testing machine. The utility model moves the ICT test machine from the outside of the line to the inside of the line, namely, the ICT test machine is arranged above the inner side of the main conveying belt, and the operator directly takes and places the PCB test from the conveying line in front, so that the PCB taking and placing stroke is short, and the operation time is short; improve the high strength operation mode that personnel frequently turned around, reduce the fatigue degree, promote the operating efficiency.
Patent CN215695970U discloses a full-automatic ICT detects machine, including storage case, feed mechanism, ICT detection device, circulation mechanism, receiving mechanism, receipts workbin and control module, the storage case is used for depositing the PCB board that awaits measuring, feed mechanism is used for placing the PCB board that awaits measuring on circulation mechanism, circulation mechanism is used for carrying the PCB board that awaits measuring to ICT detection device on and will detect the PCB board after accomplishing at ICT detection and carry to the receiving box in, ICT detection device is used for carrying out the ICT to the PCB board that awaits measuring and feeds back the testing result to control module, the receiving box is used for storing the PCB board after detecting, receiving mechanism is used for driving the receiving box and receives the PCB board after detecting, control module is used for controlling feed mechanism, ICT detection device, circulation mechanism, receiving mechanism. The utility model discloses a full-automatic ICT of printer PCB board detects, has reduced artificial work load, alone alright with many equipment of concurrent operation, and then reduced the cost of labor, improved production efficiency.
After ICT detection is performed on a circuit board, the PCB with poor detection needs to be manually placed on an auxiliary conveying belt to be shunted away by the patent CN 207851237U; the three-axis module in the patent CN215695970U is connected with a marking mechanism, the marking mechanism is electrically connected with the control module to mark an unqualified position detected by the ICT detection device, and an unqualified circuit board needs to be manually rejected subsequently. The above patents are all single line detection, and the detection efficiency is low; and above-mentioned patent all needs the manual work to reject and detects unqualified circuit board, can not realize automatic picking material, and the cost of labor is high, and the operating efficiency is low.
Disclosure of Invention
In view of the above, the present invention provides an ICT testing apparatus and a testing method thereof for a printed circuit board, which can realize two-line automatic feeding, detecting, discharging and rejecting of the printed circuit board, greatly improve the detecting efficiency and rejecting efficiency, have high automation degree, do not need to use manpower, and have high detecting precision.
In order to achieve the purpose, the invention adopts the following technical scheme: an ICT testing device for a printed circuit board sequentially comprises a feeding mechanism, a liftable feeding conveying mechanism, a double-layer detection mechanism, a liftable blanking conveying mechanism, a blanking mechanism, a recovery box and a control system from the front end to the rear end; the feeding mechanism, the liftable feeding conveying mechanism, the double-layer detection mechanism, the liftable blanking conveying mechanism and the blanking mechanism are arranged along the same line, and the recovery box is arranged on one side of the blanking mechanism;
the PCB to be detected is transmitted to the liftable feeding conveying mechanism by the feeding mechanism, the liftable feeding conveying mechanism is controlled by a control system to ascend and descend, the liftable feeding conveying mechanism alternately transmits the PCB to be detected to a lower layer detection mechanism and an upper layer detection mechanism of the double-layer detection mechanism for detection, the lower layer detection mechanism and the upper layer detection mechanism alternately transmit the detected PCB to the liftable blanking conveying mechanism, qualified PCBs are transmitted to the blanking mechanism by the liftable blanking conveying mechanism, and unqualified PCBs are transmitted to the recovery box by the liftable blanking conveying mechanism after rotation;
the lifting blanking conveying mechanism comprises a blanking conveying track, a blanking conveying motor, a blanking lifting assembly, an upper base fixed at the bottom end of the blanking lifting assembly, a rotary cylinder and a lower base; the blanking conveying motor drives the conveying belt to bear the PCB to move horizontally along the blanking conveying track, and the control system controls the blanking lifting assembly to drive the blanking conveying track, the blanking conveying motor and the detected PCB to lift at the rear end of the lower layer detection mechanism or the upper layer detection mechanism; the rotary cylinder is arranged between the upper base and the lower base, and the control system controls the rotary cylinder to drive the upper base, the blanking lifting assembly, the blanking conveying track and the blanking conveying motor to rotate.
Furthermore, the lifting feeding conveying mechanism comprises a feeding conveying track, a feeding conveying motor, a feeding lifting assembly and a base arranged at the bottom end of the feeding lifting assembly; the feeding conveying motor drives the conveying belt to bear the PCB and translate along the feeding conveying track, and the control system controls the feeding lifting assembly to drive the feeding conveying track, the feeding conveying motor and the PCB to be detected to lift at the front end of the lower-layer detection mechanism or the upper-layer detection mechanism.
Furthermore, the feeding mechanism, the lower layer detection mechanism and the blanking mechanism are identical in conveying height.
Furthermore, the lower detection mechanism and the upper detection mechanism both comprise conveying test structures, each conveying test structure comprises a supporting plate fixed with the frame, a guide rod with the lower end penetrating through the supporting plate, a first air cylinder fixed with the air cylinder seat and the supporting plate, a conveying test track fixed with the upper end of the air cylinder rod of the first air cylinder and the upper end of the guide rod respectively, a conveying test motor for driving the conveying belt to bear the PCB to translate along the conveying test track, and a needle plate box arranged on the supporting plate.
Furthermore, the lower layer detection mechanism and the upper layer detection mechanism both further comprise an air cylinder compression structure, and the air cylinder compression structure comprises a pressure plate, a pressure rod vertically fixed on the bottom surface of the pressure plate, an induction coil arranged below the pressure plate, and a second air cylinder with an air cylinder seat fixed with the frame; and the upper end of the cylinder rod of the second cylinder is fixed with the pressing plate.
Furthermore, the lifting feeding conveying mechanism also comprises a feeding conveying track width adjusting component; the liftable blanking conveying mechanism also comprises a blanking conveying track width adjusting component; the feeding conveying track width adjusting assembly and the discharging conveying track width adjusting assembly are rocking handle screw rod mechanisms or cylinder push rod mechanisms.
Furthermore, the feeding lifting assembly and the discharging lifting assembly are hydraulic lifting tables, and each hydraulic lifting table comprises a cross telescopic arm and a hydraulic cylinder; the control system pushes the cross telescopic arms of the feeding lifting assembly and the discharging lifting assembly to lift through the hydraulic cylinders for controlling the feeding lifting assembly and the discharging lifting assembly.
A test method adopting the ICT test device of the printed circuit board comprises a feeding process and a blanking/rejecting process; the feeding process comprises the following steps:
s1.1, a feeding mechanism conveys a first PCB to a liftable feeding conveying mechanism, and the liftable feeding conveying mechanism conveys the first PCB to a lower layer detection mechanism for detection;
s1.2, the feeding mechanism conveys a second PCB to the liftable feeding conveying mechanism, the control system controls the liftable feeding conveying mechanism to ascend to the height of the upper detection mechanism, the second PCB is conveyed to the upper detection mechanism to be detected, and then the control system controls the liftable feeding conveying mechanism to descend to the height of the feeding mechanism;
s1.3, repeatedly cycling the step S1.1 to the step S1.2;
the blanking/rejecting process comprises the following steps:
s2.1, the lower layer detection mechanism finishes detection of the first PCB and sends a detection result to the control system, the lower layer detection mechanism conveys the first PCB to the liftable blanking conveying mechanism, and the control system analyzes the detection result; if the first PCB is detected to be qualified, the liftable blanking conveying mechanism conveys the qualified PCB to the blanking mechanism; if the first PCB is unqualified, the control system controls the rotary cylinder of the liftable blanking conveying mechanism to rotate, then the unqualified PCB is conveyed to a recovery box, and the control system controls the rotary cylinder to rotate after recovery;
s2.2, the upper layer detection mechanism finishes the detection of the second PCB and sends a detection result to the control system, the control system controls the liftable blanking conveying mechanism to be lifted to the height of the upper layer detection mechanism, the upper layer detection mechanism conveys the second PCB to the liftable blanking conveying mechanism, and the control system analyzes the detection result; if the second PCB is detected to be qualified, the control system controls the liftable blanking conveying mechanism to descend to the height of the blanking mechanism, and then the qualified PCB is conveyed to the blanking mechanism; if the second PCB is unqualified in detection, the control system controls the liftable blanking conveying mechanism to descend to the height of the blanking mechanism, simultaneously controls the rotary cylinder to rotate, then conveys the unqualified PCB to a recovery box, and controls the rotary cylinder to rotate after recovery;
s2.3, repeatedly circulating the step S2.1 to the step S2.2.
The invention has the beneficial effects that:
the printed circuit board ICT testing device can realize double-line automatic feeding, detection, blanking and material picking of the printed circuit board, greatly improve the detection efficiency and the material picking efficiency, has high automation degree, does not need to use manpower, and has high detection precision and accurate detection result. The ICT testing device for the printed circuit board is provided with the liftable feeding conveying mechanism, the double-layer detection mechanism and the liftable discharging conveying mechanism, the liftable feeding conveying mechanism and the liftable discharging conveying mechanism can carry out feeding and discharging on the upper layer detection mechanism and the lower layer detection mechanism through automatic lifting, the upper layer detection mechanism and the lower layer detection mechanism can carry out automatic detection operation simultaneously, the automation degree is high, the detection amount of the printed circuit board in unit time is multiplied, and the detection efficiency is greatly improved.
According to the liftable blanking conveying mechanism, the rotary cylinder is arranged between the upper base and the lower base, the control system controls the rotary cylinder to drive the upper base, the blanking lifting assembly, the blanking conveying track and the blanking conveying motor to rotate, the conveying direction of the detected PCB is changed, the unqualified PCB is conveyed to the recovery box, the unqualified PCB is automatically rejected, manual operation is not needed for automatic rejection, the rejection efficiency is improved, and the labor cost is saved.
The lower detection mechanism and the upper detection mechanism both comprise a conveying test structure and an air cylinder compression structure, a pressing plate and a pressing rod of the air cylinder compression structure descend, the pressing rod compresses the PCB to be tested for testing, all welding spots of the PCB to be tested are ensured to be in contact with probes of a needle plate box, false detection and error detection caused by poor contact are avoided, and the detection precision of the PCB is improved.
The feeding conveying track width adjusting assembly and the blanking conveying track width adjusting assembly can adjust the track spacing, are suitable for PCB detection mechanisms with different sizes and specifications and PCB detection mechanisms with different transmission heights, and can carry out automatic lifting feeding and blanking transmission and automatic material picking.
Drawings
FIG. 1 is a schematic structural view of a printed circuit board ICT testing device of the present invention without a recycling bin;
FIG. 2 is a partial structure diagram of the lifting feeding conveying mechanism of the invention;
FIG. 3 is a front view of the lifting feeding conveyor mechanism of the present invention;
FIG. 4 is a diagram showing the structure of the lower detection mechanism and the upper detection mechanism of the present invention;
FIG. 5 is a partial structure diagram of the liftable blanking conveying mechanism of the invention;
FIG. 6 is a front view of the liftable blanking conveying mechanism.
Description of reference numerals: 1-feeding mechanism, 2-liftable feeding conveying mechanism, 21-feeding conveying track, 22-feeding conveying motor, 23-feeding conveying track width adjusting component, 24-feeding lifting component, 25-base, 3-double-layer detection mechanism, 31-conveying test structure, 311-supporting plate, 312-guide rod, 313-first air cylinder, 314-conveying test track, 315-conveying test motor, 316-needle plate box, 4-liftable blanking conveying mechanism, 41-blanking conveying track, 42-blanking conveying motor, 43-blanking conveying track width adjusting component, 44-blanking lifting component, 45-upper base, 46-rotary air cylinder, 47-lower base and 5-blanking mechanism.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
The utility model provides a printed circuit board ICT testing arrangement, includes feed mechanism 1, liftable material loading conveying mechanism 2, double-deck detection mechanism 3, liftable unloading conveying mechanism 4, unloading mechanism 5, collection box and control system by front end to the rear end in proper order. The feeding mechanism 1, the lifting feeding conveying mechanism 2, the double-layer detection mechanism 3, the lifting discharging conveying mechanism 4 and the discharging mechanism 5 are arranged along the same line, and the recycling box is arranged on one side of the discharging mechanism 5.
The PCB to be detected is transmitted to a liftable feeding conveying mechanism 2 by a feeding mechanism 1, the liftable feeding conveying mechanism 2 is controlled by a control system to ascend and descend, the liftable feeding conveying mechanism 2 alternately transmits the PCB to be detected to a lower layer detection mechanism and an upper layer detection mechanism of a double-layer detection mechanism 3 for detection, the lower layer detection mechanism and the upper layer detection mechanism alternately transmit the detected PCB to a liftable blanking conveying mechanism 4, the qualified PCB is transmitted to a blanking mechanism 5 through the liftable blanking conveying mechanism 4, and the unqualified PCB is transmitted to a recovery box through the rotary liftable blanking conveying mechanism 4.
Liftable material loading conveyor 2 includes material loading delivery track 21, material loading conveying motor 22, material loading lifting unit 24 and sets up in the base 25 of material loading lifting unit bottom. The feeding conveying motor 22 drives the conveying belt to bear the PCB to move horizontally along the feeding conveying track 21, the control system controls the feeding lifting assembly 24 to drive the feeding conveying track 21, the feeding conveying motor 22 and the PCB to be detected to lift at the front end of the lower layer detection mechanism or the upper layer detection mechanism, and the lower layer detection mechanism and the upper layer detection mechanism are respectively fed.
The liftable blanking conveying mechanism 4 comprises a blanking conveying track 41, a blanking conveying motor 42, a blanking lifting assembly 44, an upper base 45 fixed at the bottom end of the blanking lifting assembly, a rotary cylinder 46 and a lower base 47. The blanking conveying motor 42 drives the conveyor belt to bear the PCB to move horizontally along the blanking conveying track 41, the control system controls the blanking lifting assembly 44 to drive the blanking conveying track 41, the blanking conveying motor 42 and the detected PCB to lift at the rear end of the lower layer detection mechanism or the upper layer detection mechanism, and the respective blanking of the lower layer detection mechanism and the upper layer detection mechanism is realized. The rotary cylinder 46 is arranged between the upper base 45 and the lower base 47, the control system controls the rotary cylinder 46 to drive the upper base 45, the blanking lifting assembly 44, the blanking conveying track 41 and the blanking conveying motor 42 to rotate, the conveying direction of the detected PCB is changed, the unqualified PCB is conveyed to the recycling bin, and the unqualified PCB is removed.
Example 2
The present embodiment is different from embodiment 1 in that: the feeding mechanism 1, the lower layer detection mechanism and the blanking mechanism 5 have the same conveying height.
Example 3
The present embodiment is different from embodiment 1 in that: the lower detection mechanism and the upper detection mechanism both comprise conveying test structures 31, each conveying test structure 31 comprises a supporting plate 311 fixed with the frame, a guide rod 312 with the lower end penetrating through the supporting plate, a first air cylinder 313 fixed with an air cylinder seat and the supporting plate, a conveying test track 314 fixed with the upper end of the air cylinder rod of the first air cylinder and the upper end of the guide rod respectively, a conveying test motor 315 for driving a conveying belt to bear the PCB to translate along the conveying test track, and a needle plate box 316 arranged on the supporting plate.
And (3) detection process: when the induction coil 325 induces that the PCB to be tested is transmitted to the transmission test track 314, the control system controls the first air cylinder 313 to drive the transmission test track 314, the transmission test motor 315 and the PCB to be tested to descend to the needle board box 316, and the PCB to be tested is tested; after the test is finished, the control system controls the first cylinder 313 to drive the conveying test track 314, the conveying test motor 315 and the detected PCB to ascend and reset.
Example 4
The present embodiment is different from embodiment 3 in that: the lower layer detection mechanism and the upper layer detection mechanism both further comprise an air cylinder compression structure 32, and the air cylinder compression structure 32 comprises a pressing plate 321, a pressing rod 322 vertically fixed on the bottom surface of the pressing plate, an induction coil 323 arranged below the pressing plate, and a second air cylinder 324 with an air cylinder seat fixed with the frame. The pressing plate 321 is fixed to the upper end of the cylinder rod of the second cylinder 324.
And (3) a compression detection process: when the induction coil 325 induces that the PCB to be tested is transferred to the conveying test track 314, the control system controls the first cylinder 313 to drive the conveying test track 314, the conveying test motor 315 and the PCB to be tested to descend to the needle box 316; the control system controls the second cylinder 324 to drive the pressing plate 321 and the pressing rod 322 to descend, and the pressing rod 322 presses the PCB to be tested tightly for testing, so that all welding points of the PCB to be tested are ensured to be in contact with the probes of the needle plate box 316; after the test is finished, the control system controls the first air cylinder 313 to drive the conveying test track 314, the conveying test motor 315 and the detected PCB to ascend and reset, and controls the second air cylinder 324 to drive the pressing plate 321 and the pressing rod 322 to ascend and reset.
Example 5
The present embodiment is different from embodiment 3 in that: the liftable feeding conveying mechanism 2 also comprises a feeding conveying track width adjusting component 23; the liftable blanking conveying mechanism 4 further comprises a blanking conveying track width adjusting assembly 43. The feeding conveying track width adjusting assembly 23 and the discharging conveying track width adjusting assembly 43 are rocking handle screw rod mechanisms or cylinder push rod mechanisms, can adjust track intervals, are suitable for PCB detection mechanisms with different sizes and specifications and PCB detection mechanisms with different transmission heights, and carry out automatic lifting feeding, discharging and automatic material picking.
Example 6
The present embodiment is different from embodiment 3 in that: the feeding lifting component 24 and the discharging lifting component 44 are hydraulic lifting platforms, and each hydraulic lifting platform comprises a cross telescopic arm and a hydraulic cylinder. The control system pushes the cross telescopic arms of the feeding lifting assembly 24 and the discharging lifting assembly 44 to lift by controlling the hydraulic cylinders of the feeding lifting assembly 24 and the discharging lifting assembly 44, so that the conveying height of feeding and discharging is adjusted.
Example 7
A printed circuit board ICT testing method adopts the printed circuit board ICT testing device and comprises a feeding process and a detecting blanking/rejecting process. The feeding process comprises the following steps:
s1.1, a feeding mechanism 1 conveys a first PCB to a liftable feeding conveying mechanism 2, and the liftable feeding conveying mechanism 2 conveys the first PCB to a lower layer detection mechanism for detection;
s1.2, the feeding mechanism 1 conveys a second PCB to the liftable feeding conveying mechanism 2, the control system controls the liftable feeding conveying mechanism 2 to rise to the height of the upper detection mechanism, the second PCB is conveyed to the upper detection mechanism to be detected, and then the control system controls the liftable feeding conveying mechanism 2 to fall to the height of the feeding mechanism 1;
s1.3, repeatedly cycling the step S1.1 to the step S1.2.
The blanking/rejecting process comprises the following steps:
s2.1, the lower layer detection mechanism finishes detection of the first PCB and sends a detection result to the control system, the lower layer detection mechanism conveys the first PCB to the liftable blanking conveying mechanism 4, and the control system analyzes the detection result; if the first PCB is detected to be qualified, the liftable blanking conveying mechanism 4 conveys the qualified PCB to the blanking mechanism 5; if the first PCB is unqualified, the control system controls the rotary cylinder 46 of the liftable blanking conveying mechanism 4 to rotate, then the unqualified PCB is conveyed to a recovery box, and the control system controls the rotary cylinder 46 to rotate after recovery;
s2.2, the upper layer detection mechanism finishes the detection of the second PCB and sends a detection result to the control system, the control system controls the liftable blanking conveying mechanism 4 to be lifted to the height of the upper layer detection mechanism, the upper layer detection mechanism conveys the second PCB to the liftable blanking conveying mechanism 4, and the control system analyzes the detection result; if the second PCB is detected to be qualified, the control system controls the liftable blanking conveying mechanism 4 to descend to the height of the blanking mechanism 5, and then the qualified PCB is conveyed to the blanking mechanism 5; if the second PCB is unqualified, the control system controls the liftable blanking conveying mechanism 4 to descend to the height of the blanking mechanism 5, simultaneously controls the rotary cylinder 46 to rotate, then conveys the unqualified PCB to the recovery box, and controls the rotary cylinder 46 to rotate after the recovery is finished;
s2.3, repeatedly circulating the step S2.1 to the step S2.2.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The ICT testing device for the printed circuit board is characterized in that: the device sequentially comprises a feeding mechanism (1), a liftable feeding conveying mechanism (2), a double-layer detection mechanism (3), a liftable blanking conveying mechanism (4), a blanking mechanism (5), a recovery box and a control system from the front end to the rear end; the feeding mechanism (1), the liftable feeding conveying mechanism (2), the double-layer detection mechanism (3), the liftable blanking conveying mechanism (4) and the blanking mechanism (5) are arranged along the same line, and the recovery box is arranged on one side of the blanking mechanism (5);
the PCB to be detected is transmitted to the liftable feeding conveying mechanism (2) by the feeding mechanism (1), the liftable feeding conveying mechanism (2) is controlled by a control system to lift, the liftable feeding conveying mechanism (2) alternately transmits the PCB to be detected to a lower layer detection mechanism and an upper layer detection mechanism of the double-layer detection mechanism (3) for detection, the lower layer detection mechanism and the upper layer detection mechanism alternately transmit the detected PCB to the liftable blanking conveying mechanism (4), the qualified PCB is transmitted to the blanking mechanism (5) through the liftable blanking conveying mechanism (4), and the unqualified PCB is transmitted to the recycling bin through the liftable blanking conveying mechanism (4) after rotation;
the lifting blanking conveying mechanism (4) comprises a blanking conveying track (41), a blanking conveying motor (42), a blanking lifting assembly (44), an upper base (45) fixed at the bottom end of the blanking lifting assembly, a rotary cylinder (46) and a lower base (47); the blanking conveying motor (42) drives the conveying belt to bear the PCB to move horizontally along the blanking conveying track (41), and the control system controls the blanking lifting assembly (44) to drive the blanking conveying track (41), the blanking conveying motor (42) and the detected PCB to lift at the rear end of the lower layer detection mechanism or the upper layer detection mechanism; the rotary cylinder (46) is arranged between the upper base (45) and the lower base (47), and the control system controls the rotary cylinder (46) to drive the upper base (45), the blanking lifting assembly (44), the blanking conveying track (41) and the blanking conveying motor (42) to rotate.
2. A printed circuit board ICT test set according to claim 1, characterized in that: the lifting feeding conveying mechanism (2) comprises a feeding conveying track (21), a feeding conveying motor (22), a feeding lifting assembly (24) and a base (25) arranged at the bottom end of the feeding lifting assembly; the PCB board that material loading conveying motor (22) drive conveyer belt bore PCB board follows material loading conveying track (21) translation, control system control material loading lifting unit (24) drive material loading conveying track (21), material loading conveying motor (22) and the PCB board that awaits measuring are in lower floor detection mechanism or upper detection mechanism's front end lift.
3. Printed circuit board ICT test device according to claim 1 or 2, characterized in that: the feeding mechanism (1), the lower layer detection mechanism and the blanking mechanism (5) are identical in conveying height.
4. Printed circuit board ICT test device according to claim 1 or 2, characterized in that: the lower detection mechanism and the upper detection mechanism respectively comprise a conveying test structure (31), the conveying test structure (31) comprises a supporting plate (311) fixed with the frame, a guide rod (312) with the lower end penetrating through the supporting plate, a first air cylinder (313) with an air cylinder seat fixed with the supporting plate, a conveying test track (314) fixed with the upper end of the air cylinder rod of the first air cylinder and the upper end of the guide rod, a conveying test motor (315) for driving the conveying belt to bear the PCB to translate along the conveying test track, and a needle plate box (316) arranged on the supporting plate.
5. A printed circuit board ICT test device according to claim 4, characterized in that: the lower layer detection mechanism and the upper layer detection mechanism both further comprise an air cylinder compression structure (32), and the air cylinder compression structure (32) comprises a pressure plate (321), a pressure rod (322) vertically fixed on the bottom surface of the pressure plate, an induction coil (323) arranged below the pressure plate, and a second air cylinder (324) with an air cylinder seat fixed with the rack; the pressing plate (321) is fixed at the upper end of the cylinder rod of the second cylinder (324).
6. A printed circuit board ICT test arrangement according to claim 2, characterized in that: the lifting feeding conveying mechanism (2) also comprises a feeding conveying track width adjusting assembly (23); the liftable blanking conveying mechanism (4) further comprises a blanking conveying track width adjusting assembly (43); the feeding conveying track width adjusting assembly (23) and the discharging conveying track width adjusting assembly (43) are rocking handle screw rod mechanisms or cylinder push rod mechanisms.
7. A printed circuit board ICT test set according to claim 2, characterized in that: the feeding lifting assembly (24) and the blanking lifting assembly (44) are hydraulic lifting platforms, and each hydraulic lifting platform comprises a cross telescopic arm and a hydraulic cylinder; the control system pushes the cross telescopic arms of the feeding lifting assembly (24) and the discharging lifting assembly (44) to lift through the hydraulic cylinders for controlling the feeding lifting assembly (24) and the discharging lifting assembly (44).
8. A testing method using the printed circuit board ICT testing arrangement according to any of the claims 1-7, characterized in that: comprises a feeding process and a blanking/rejecting process; the feeding process comprises the following steps:
s1.1, a feeding mechanism (1) conveys a first PCB to a liftable feeding conveying mechanism (2), and the liftable feeding conveying mechanism (2) conveys the first PCB to a lower layer detection mechanism for detection;
s1.2, the feeding mechanism (1) conveys a second PCB to the liftable feeding conveying mechanism (2), the control system controls the liftable feeding conveying mechanism (2) to rise to the height of the upper detection mechanism, the second PCB is conveyed to the upper detection mechanism to be detected, and then the control system controls the liftable feeding conveying mechanism (2) to fall to the height of the feeding mechanism (1);
s1.3, repeatedly cycling the step S1.1 to the step S1.2;
the blanking/rejecting process comprises the following steps:
s2.1, the lower layer detection mechanism finishes detection of the first PCB and sends a detection result to the control system, the lower layer detection mechanism transmits the first PCB to the liftable blanking conveying mechanism (4), and the control system analyzes the detection result; if the first PCB is detected to be qualified, the lifting blanking conveying mechanism (4) conveys the qualified PCB to the blanking mechanism (5); if the first PCB is unqualified, the control system controls the rotary cylinder (46) of the liftable blanking conveying mechanism (4) to rotate, then the unqualified PCB is conveyed to a recovery box, and the control system controls the rotary cylinder (46) to rotate after recovery is finished;
s2.2, the upper layer detection mechanism finishes the detection of the second PCB and sends a detection result to the control system, the control system controls the liftable blanking conveying mechanism (4) to be lifted to the height of the upper layer detection mechanism, the upper layer detection mechanism conveys the second PCB to the liftable blanking conveying mechanism (4), and the control system analyzes the detection result; if the second PCB is detected to be qualified, the control system controls the liftable blanking conveying mechanism (4) to descend to the height of the blanking mechanism (5), and then the qualified PCB is conveyed to the blanking mechanism (5); if the second PCB is unqualified, the control system controls the liftable blanking conveying mechanism (4) to descend to the height of the blanking mechanism (5), simultaneously controls the rotary cylinder (46) to rotate, then conveys the unqualified PCB to a recovery box, and controls the rotary cylinder (46) to rotate after recovery;
s2.3, repeatedly circulating the step S2.1 to the step S2.2.
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| CN202210789122.8A CN115156074A (en) | 2022-07-06 | 2022-07-06 | Printed circuit board ICT testing device and testing method thereof |
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Application publication date: 20221011 |